Victron Cyrix-Li-ct 12/24V 120A Battery Combiner Relay

Cyrix-Li-ct smart battery coupler

The Cyrix-Li-ct connects a lead-acid starter battery and a LiFePO4 battery:

- if the "Charge Disconnect" output of the VE.Bus BMS is high and - if it measures 13.4 V (or 26.8 V) or more at its power terminals.

The Cyrix switches off immediately:

- if its control output reaches the "free floating" state (open circuit), indicating cell overvoltage or cell overtemperature and/or - if the battery voltage drops below 13.2 V.

Start Assist Function: a short positive pulse closes the relay for 30 seconds (see figure on page 2). A built-in TVS diode limits the voltage spike that can occur if the Cyrix suddenly switches off due to cell overvoltage or overtemperature.

Documents & Downloads

• Datasheet